Maryland Statutes
Subtitle 27 - Prohibited Acts
Section 26-2706 - Possession of Open Container -- Written Consent Required

(a)    An individual may possess an alcoholic beverage in an open container on private property described under § 6–322(a)(1) of this article only if the individual possesses and presents the written consent of the owner of the property.
    (b)    An individual charged with a misdemeanor under § 6–322 of this article shall comply with the command in the charging document to appear in court by appearing in court in person.